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No. 433,380. Patented July 29, 1890.

I rvrrnn STATES ATENT rricn.

CHRISTOPHER COLUMBUS WVARREN, OF OHUNKEYS STATION, MISSISSIPPI, ASSIGNOR OF ONE-HALF TO NANCY WVARREN, OF SAME PLACE.

BOLT-EXTRACTOR.

SPECIFICATION forming part of Letters Patent No. 433,380, dated July 29, 1890. Application filed March 7, 1890. Serial No. 343,007. (No model.)

To aZZ whom it may concern.-

Be it known that I, CHRISTOPHER COLUM- BUS WARREN, a citizen of the United States, residing at Ohunkeys Station, in the county of Newton and State of Mississippi, have in vented a new and useful Bolt-Extractor, of which the following is a specification.

This invention has relation to a device for extracting bolts from bolt holes; and among the objects in view are to provide a strong and durable device so constructed as to grip a bolt and draw the same from the hole in which it is contained in such a manner as to prevent marring orotherwise injuring the threads or body portion of the bolt.

WVith the above objects in view the invention consists in a bar or lever one end of which is chamfered to take under the head of the bolt and start the same and the opposite end of which is oppositely beveled or reduced,

provided at each side with fulcruiii-shoulders,

and in a swiveled shackle embracing the reduced end of the bolt, and it, like said reduced end, having a series of threaded recesses for gripping the body of the bolt.

Referring to the drawings, Figure 1 is a perspective of a device constructed in accordance with my invention. Fig. 2 is a longitudinal vertical section. 3 is a transverse view through the pivot; Figs. 4 and 5, details in perspective of the bar or lever and the shackle, respectively.

Like numerals of reference indicate like parts in all the figures of the drawings.

The bar 1 is rectangular in cross-section and of a desired length, and has its rear edge chamfered or cut away, as at 2, forming a tooth 3. The opposite end is reduced at opposite sides, as at 4, and provided at its extremity with a series of curved recesses 5, threaded and formed upon various-sized arcs. In rear of the reduced end 4 the under side of the bar 1 is provided with a protrusion forming a fulcrnnrpoint 6. A transverse bolt-opening 7 is formed in the bar above the fulcrum 6, and in said opening there is mounted a transverse bolt 8.

9 represents a U -shaped shackle, the terminals of which are near their ends provided with bolt-openings 10, agreeing in size with that formed in the bar 1. This shackle is mounted upon the bolt 8, and the latter is provided at its threaded end with a binding-nut 11. The inner edge of the shackle, or that portion thereof opposite the reduced ends 4, is provided with a series of threaded various- 1y-sized curved recesses 5, said recesses being located opposite to and agreeing in size with the recesses 5, formed in the oppositely-reduced end act the bar 1.

The manner of using the invention is as follows: The reduced rear end 3 is first inserted under the head of a bolt, and by using the bar 1 as a lever said bolt is slightly elevated from the hole in which it is located. This operation is carried on until the bolt has been raised from a half to three-quarters of an inch, when the bar I is turned around or reversed and swung upon the bolt 8 until at substantially a right angle to the shackle, when the device is lowered so that the shackle takes over the head of the bolt. The rear end of the bar 1 is now lowered until it bites upon the body of the bolt, the protrusion 6 acting as a fulcrum. bearing down 011 the rear end of the bar 1 the bolt is withdrawn gradually, and when the bar 1 has been depressed a few inches a new hold upon the bolt is taken by repetition of the operation just describednamely, swinging the rear end of the bar up and slipping the shackle lower down upon the bolt to be extracted. In this manner bolts may be withdrawn with ease and facility from their respective openings. The under surface of the shackle is rounded, so as to rock in accordance with the movements of the bolt in the act of withdrawal, and the recesses 5 are somewhat slanting, so that the recesses are always substantially parallel with the bolt upon which it is operating, and thereby afford a seat for the bolt that has contactwith the bolt for a considerable portion of the length of the bolt.

Having thus described my invention, what I claim is- 1. In a device of the class described, a bar reduced at its forward end and provided with a series of variously-sized curved bolt-receiving recesses and in rear thereof a transverse boltopening, in combination with a shackle of U shape, the terminals of which embrace the bar and are provided with a bolt-opening, and a bolt passed through the opening and through the bolt-opening of the bar and provided with a nut, said shackle having its inner edge recessed to correspond with the recesses of the bar, substantially as specified.

2. The bar 1, reduced at its rear end, as at 3, at its forward end, as at 4, and having the protuberance 6 upon its under side in rear of the reduced front end, and above the same the transverse opening 7, in combination with the U.-shaped shackle 9, embracing the end of the bar and provided with bolt-openings 10, the bolt 8, and the nut 11, the inner edge of the shackle and the front end of the bar 1 being provided with a series of correspondiin g grooves or recesses, substantially as speci In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two Witnesses.

' CHRISTOPHER COLUMBUS WARREN.

Witnesses:

W. D. WATSON, H. J. BROWN. 

